Fish beginning with J

Jack - The roosterfish has an unusual arrangement of its ears: the swim bladder penetrates the brain through the large foramina and makes contact with the inner ear.

Jack - Leatherjack may also refer to the smooth leatherjacket, a member of the Monacanthidae family.

Jae barb - Jae Barb is a species of ray-finned fish in the genus Barbus.

Jaguar catfish - The jaguar catfish is a species of catfish of the family Auchenipteridae.

Jamur Lake grunter - The Yamur Lake grunter is a species of fish in the Terapontidae family.

Janss' pipefish - Doryrhamphus janssi is a pipefish from the Western Central Pacific.

Japan surgeonfish - Acanthurus japonicus is a Tang from the Indo-West Pacific.

Japanease bullhead shark - The zebra bullhead shark, Heterodontus zebra , is a bullhead shark of the family Heterodontidae, found in the subtropical western Pacific Ocean between latitudes 40° N to 20° S, at depths of between 50 and 200 m.

Japanese amberjack - It is greatly appreciated in Japan, where it is called hamachi or buri.

Japanese angelshark - Identification of the species is based on the following characters: line of thorny denticles along the midback present; no prominent ocelli on the pectoral fins; pelvic fin tips do not reach or surpass the first dorsal fin origin; rusty brown coloration above with fine spotting pattern of numerous small square-shaped spots throughout; wide but shallow upper lip arch ; large box-like papillae along inside anterior edge of spiracles; interspiralce width greater than interorbital width.

Japanese armorhead - The Japanese armorhead or Japanese boarfish, Pentaceros japonicus, is an armorhead of the genus Pentaceros, found around Japan, southern Australia, and the North Island of New Zealand, at depths of between 200 and 650 m on the continental shelf.

Japanese bullhead shark - The Japanese bullhead shark, Heterodontus japonicus, is a species of bullhead shark, family Heterodontidae, found in the northwestern Pacific Ocean off the coasts of Japan, Korea, and China.

Japanese eel - Populations of the Japanese eel, along with anguillid eel populations worldwide, have declined drastically in recent years.

Japanese gray smooth hound - The spotless smooth-hound, Mustelus griseus, is a houndshark of the family Triakidae, found on the continental shelves of the northwest Pacific between latitudes 40° N and 11° N, from the surface to 300 m.

Japanese huchen - Sakhalin taimen is one of largest, most ancient salmon species and primarily inhabitats the lower to middle reaches of lakes and rivers.

Japanese meagre - Argyrosomus japonicus is a fish of the Sciaenidae family.

Japanese rice fish - Oryzias latipes is a model organism and is extensively used in many areas of biological research.

Japanese roughshark - This species grows to 64.

Japanese sawshark - The Japanese sawshark, Pristiophorus japonicus, is a sawshark of the family Pristiophoridae, found in the northwest Pacific Ocean around Japan, Korea, and northern China between latitudes 48°N and 22°N, from the surface to 500 m.

Japanese scad - The largest mackerel scad recorded was 46 cm long.

Japanese sillago - The species inhabits a variety of shallow water habitats where it preys on a variety of crustaceans as well as polychaetes, bivalves and small fish.

Japanese sillago - The northern whiting is one of 29 species in the genus Sillago, which is one of three genera in the smelt-whiting family Sillaginidae.

Japanese spearfish - The shortbill spearfish, Tetrapturus angustirostris, is a species of marlin found in Indo-Pacific oceans not far from the surface.

Japanese topeshark - The Japanese topeshark, Hemitriakis japanica, is a hound shark of the family Triakidae, reaching lengths of up to 1.

Japanese velvet dogfish - The Japanese velvet dogfish, Zameus ichiharai, is a harmless deepwater sleeper shark of the family Dalatiidae, found in the northwest Pacific from Suruga Bay and adjacent waters of Japan at depths of between 500 and 800 m.

Japanese wobbegong - The Japanese wobbegong, Orectolobus japonicus, is a carpet shark in the family Orectolobidae, found in the tropical western Pacific Ocean from Japan and Korea to Viet Nam and the Philippines, between latitudes 43° N to 6° N.

Jarbua terapon - Terapon jarbua is a Grunter from the Indo-Pacific.

Java barb - Java Barb is a species of ray-finned fish in the genus Barbonymus.

Java loach - Java Loach is a species of unbanded kuhli loach native to the sandy streams of Southeast Asia.

Java stingaree - Family Urolophidae: Atlantic, Indian and Pacific Oceans.

Javelin fish - The thorntooth grenadier or javelin fish, Lepidorhynchus denticulatus , is a rattail, the only member of the genus Lepidorhynchus, found around southern Australia and New Zealand, at depths of between 200 and 1,000 m.

Javelin spookfish - The species is notable for unusual protuberances that grow from its eyes, which each have "a well developed lens"

Javichthys kailolae - Javichthys is a genus of Tetraodontidae.

Jerdon's carp - Jerdon's Carp is a species of ray-finned fish in the genus Hypselobarbus.

Jipe tilapia - The Jipe tilapia is a species of fish in the Cichlidae family.

Joey - The Atlantic Mackerel is by far the most common of the ten species of the family that are caught in British waters.

John moriggle - Bonnetmouths are similar to the only other member of its family, the Boga, or Inermia vittata.

Johnny darter - The Johnny Darter is a small fish native to lakes and streams in North America.

Jonklaas loach - The Spotted Loach is a species of ray-finned fish in the Cobitidae family.

Jordan's sucker - This is a slender and streamlined sucker, generally olive green to brown above and on the sides, and white to yellowish underneath.

Julidochromis marlieri - Julidochromis marlieri is a species of fish in the Cichlidae family.

Jumbie teta - The type species is Ancistrus cirrhosus.

June sucker - Unlike most other suckers, the June sucker is not a bottom-feeder.